Intersection of Artificial Intelligence (AI) and Microbiology

I am enthusiastic about the intersection of artificial intelligence (AI) and microbiology. AI is an essential technology that can be integrated into various scientific fields, but I believe microbiology is especially suited to it. Bacteria, fungi and other microorganisms generate colossal amounts of data that require extensive amounts of time to process and analyze. Using AI, microbiologists can analyze data sets generated by these microorganisms to find significant patterns and information. AI can be employed to perform antimicrobial screening, identify bacteria and evaluate microbiological data sets.

One such application of AI in microbiology is antimicrobial screening, the identification of antimicrobial compounds. In recent years, there has been a growing concern regarding antibiotic resistance, making the discovery of new antimicrobial compounds a priority. Microorganisms are a diverse source of potential antimicrobial agents. However, there are millions of species of bacteria and fungi that still need to be analyzed for antimicrobial activity. Given the vastness of this data set, AI can be used to screen antimicrobial compounds quickly. Using data sets on microbial genome sequences, sequences of peptides and chemicals, and antimicrobial data, AI can predict what chemicals or peptides may possess antimicrobial properties. Then, the most promising candidates can be isolated and subjected to antimicrobial assays, Minimum Inhibitory Concentration (MIC) testing, and cytotoxicity assays. I believe that AI-powered antimicrobial screening may help identify new antimicrobial agents.

The other application of AI in microbiology is the prediction of antimicrobial resistance. When researchers get an isolate, they usually do antimicrobial susceptibility tests to determine which antimicrobial agents can inhibit its growth. Using AI, researchers can analyze the genome sequences and genes responsible for antimicrobial resistance in a given isolate to identify patterns that signal antimicrobial resistance. This information can be used to predict whether a certain bacterium is susceptible to a given antimicrobial agent. However, antimicrobial susceptibility testing still needs to be performed to confirm these findings experimentally.

One other application of AI in microbiology is microbial identification. Microorganisms can be identified using colony morphology and staining, microscopy, biochemical tests, and genetic analysis. Recently, researchers have been working on deep learning algorithms that allow for automatic identification of bacterial species upon inputting an image of a colony. These deep learning algorithms are constructed using convolutional neural networks that can recognize patterns in images. For instance, a neural network can be trained on thousands of bacterial colony images to identify a colony’s species according to an inputted image. Such technology can be instrumental in high-throughput screening of isolates. However, I believe that AI should be utilized as an optional tool for microbial identification.

Genomic analysis is one of my favorite areas of microbiology. When researchers sequence the genome of a bacterium or fungus, they get a wealth of information about this microorganism. Firstly, the sequence data can provide information about the genes that code for enzymes and various metabolic pathways. In terms of antimicrobial screening, such genes may hint at the antimicrobial potential of a given isolate. Furthermore, genome sequence data can provide information about genes that code for antibiotic resistance mechanisms possessed by the microorganism. Additionally, the genome can give information about secondary metabolite pathways, which can be used for antimicrobial screening, enzyme discovery, and drug development. Using AI, researchers can analyze genetic data and identify the most promising candidates for antimicrobial screening. Instead of manually analyzing gene sequences, researchers can utilize AI to identify potential genes and metabolic pathways.

AI plays an essential role in microbiome research as well. There are numerous microbiomes that house hundreds or even thousands of unique bacterial species. The human gastrointestinal tract microbiome, for instance, is one of the most diverse bacterial ecosystems on the planet. Using AI, researchers can find associations between different microbiomes and various health conditions. However, I believe that the causality between bacterial species and health problems has to be validated experimentally.

Speaking of diverse bacterial ecosystems, I am most enthralled with the application of AI in marine microbiology. Marine is an incredibly diverse region in terms of its microbiota. There are numerous species of bacteria, fungi, and other protists that inhabit marine flora, especially giant seaweeds known as Sargassum. I am confident that AI can be used together with sequencing and metabolomics to find new bioactive compounds or antimicrobial agents. Researchers can take advantage of the abundance of marine organisms by isolating various microorganisms from seaweed and identifying the most promising candidates using AI. These isolated microorganisms can be used to get sequence data, which can be employed to predict what enzymes, antimicrobial compounds, or other bioactive molecules they are capable of producing. Such molecules have the potential to become novel antimicrobial agents, drugs, or biochemical reagents.

One other application of AI in microbiology is bioremediation. There are numerous strains of bacteria that can break existing pollutants in the environment, rendering them harmless. Using AI, researchers can analyze data sets on such bacteria and the chemical properties of the pollutants that they can break down. The researchers can utilize AI to find the most suitable bacteria or conditions under which bioremediation is effective. The chemical properties of the pollutants that need to be removed from the environment are of a paramount importance. Researchers can employ AI to identify patterns in environmental conditions and determine what variables (pH, temperature, nutrients, etc.) are crucial in bioremediation. Such information will allow scientists to determine the most optimal conditions for bioremediation.

Many fields of microbiology rely on the properties of microorganisms. One such field is industrial microbiology, which utilizes bacteria, fungi, and other protists to create various products. For instance, there are dozens of products made with the help of fermentation. Fermentation requires optimal conditions, namely, temperature, pH, oxygen content, nutrients, and the duration of the incubation. Using AI, researchers can analyze such data sets and identify patterns that result in optimal substrate breakdown and maximal product yield.

I believe that the relationship between microbiology and AI will be exceptionally instrumental in the future of science. However, I do not think that researchers in microbiology will be replaced by AI. Rather, I believe they will have an opportunity to utilize AI as a discovery tool. It will dramatically increase the rate of scientific breakthroughs while allowing researchers to spend their time and effort on more crucial matters, such as laboratory validation of the AI-predicted results.

When I think of the future of microbiology, I imagine an intersection between AI, genomic data, antimicrobial screening, and marine microbiology. In my opinion, such an approach will result in the rapid identification of novel bioactive compounds. The application of AI in microbiology will allow researchers to find valuable data sets generated by diverse ecosystems and unknown microorganisms. The laboratory experience will still be necessary for microbiologists in the future, although AI will allow for more opportunities. Using AI, researchers will be able to navigate the vast amounts of genetic data to find new potential enzymes, antimicrobial compounds, drugs, and biochemical reagents.

What Researchers say about Black Holes

When I started reading what researchers have said about black holes, I realized that scientists are not simply interested in them because they are mysterious or because they look fascinating in space images. Researchers consider black holes to be some of the most extreme natural laboratories in the universe. NASA describes them as objects that are still not fully understood, particularly because we do not yet know exactly what happens inside the event horizon. At the same time, scientists have strong evidence for their existence through their effects on surrounding matter, the motion of nearby stars, X-ray emission and gravitational waves.

One thing researchers repeatedly emphasize is that we cannot directly observe the inside of a black hole. Since light cannot escape from inside the event horizon, astronomers study the environment surrounding it instead. According to NASA, material falling toward a black hole can become extremely hot and produce X-rays, allowing scientists to investigate the black hole indirectly. The intense gravity of a black hole can also affect the motion of nearby stars and distort light travelling around it. For me, this is one of the most fascinating aspects of black-hole research because scientists are essentially trying to understand an invisible object by studying the evidence it leaves around itself.

Researchers are particularly interested in accretion, which is the process by which matter moves toward and potentially falls into a black hole. Scientists studying Sagittarius A, the supermassive black hole at the center of our Milky Way, are trying to understand how the black hole collects, processes and sometimes expels material. NASA researchers have described accretion as one of the major ongoing questions in black-hole research because understanding how black holes feed helps scientists understand how black holes and other cosmic structures grow.

Researchers also study what happens to the gas surrounding a black hole. As gas moves inward, it can form an accretion disk, become compressed and heated to extremely high temperatures, and produce X-rays. NASA researchers have used sophisticated computer simulations to study the turbulent magnetic fields and particle interactions occurring in the hot gas near black holes. These studies help explain the X-ray signals that astronomers actually observe from black-hole systems.

Another major area of research is the spin of black holes. Scientists are interested in how rapidly a black hole rotates because its rotation can affect the surrounding spacetime and the behavior of matter and radiation near it. This is one reason X-ray observations are so valuable. According to ISRO, X-ray polarization measurements can provide information that helps researchers investigate the mass and spin of accreting black holes, the geometry of the emitting region, accretion flows, outflows and jets.

This is exactly where I found the connection with XPoSAT very interesting. ISRO explains that X-ray polarization gives researchers two additional parameters the degree and angle of polarization which can help distinguish between different theoretical models of how X-rays are produced. In black-hole systems, X-rays from the accretion disk can become polarized, while strong gravity can bend the radiation and change its polarization properties. Researchers can use these signals to investigate the geometry and physical conditions around the black hole.

Researchers are also interested in black-hole jets. Some black holes can produce powerful outflows in which energetic particles are launched away from the region surrounding the black hole. These jets can travel enormous distances and emit radiation across different wavelengths. Scientists study their polarization because the polarization can contain information about the direction of the jet and the magnetic-field structure. ISRO specifically identifies jets and their magnetic fields as one of the areas where X-ray polarization measurements can provide important information.

Another important question researchers are trying to answer is what happens when black holes merge. When two black holes orbit each other and eventually collide, they produce gravitational waves ripples in spacetime. The first direct detection of gravitational waves in 2015 came from a black-hole merger. Since then, gravitational-wave observatories have detected many more such events. For me, this shows how researchers are developing completely different ways of studying black holes: through X-rays, visible and radio observations, the motion of stars, and even gravitational waves.

Researchers are also trying to understand the relationship between black holes and galaxies. Supermassive black holes are found at the centres of most large galaxies, including our own Milky Way. Scientists are investigating how these black holes formed, how they grew, and how their activity may influence the evolution of their host galaxies. One of the biggest unanswered questions is how some supermassive black holes became extremely massive so early in the history of the universe. NASA notes that the origin of supermassive black holes remains poorly understood.

What researchers say about the inside of a black hole is even more interesting. We have strong observational evidence for black holes, but we still do not know exactly what happens after matter crosses the event horizon. Current theories based on general relativity lead to the concept of a singularity under certain conditions, but scientists do not yet have a complete theory that combines general relativity with quantum mechanics in this extreme environment. NASA also describes what happens to matter after it passes the event horizon as an unresolved mystery.

For me, this is what makes black-hole research so exciting. Scientists already know a great deal about black holes, but every discovery seems to create another question. We have observed the shadow of a black hole, measured the movement of stars around supermassive black holes, detected gravitational waves from black hole mergers and studied X-rays produced by material near them. Yet we still do not have a complete picture of what happens in the most extreme regions of a black hole.

What XPoSAT adds to this research

From my perspective, XPoSAT is especially important because it adds another dimension to black-hole observations. ISRO explains that POLIX measures the degree and angle of polarization of X-rays in the 8–30 keV range, while XSPECT provides X-ray spectroscopy and timing information in the 0.8–15 keV range. Combining polarization with spectroscopy and timing can help researchers better understand the physical processes taking place around black holes and other extreme X-ray sources.

ISRO has also involved the wider Indian astronomy community in XPoSAT research. A national user meeting brought together researchers from around 20 institutes and universities to discuss how X-ray polarization could be used to investigate black holes, neutron stars, active galactic nuclei and other astronomical objects. ISRO subsequently released XPoSAT scientific data to the research community in October 2025, allowing researchers to work with the mission's observations.

So, when I look at what researchers are saying, I feel that black holes are no longer just mysterious “dark objects.” They have become powerful tools for investigating some of the biggest questions in physics. Researchers are using every possible clue X-rays, polarization, gravitational waves, light, stellar motion and computer simulations to understand them. And what excites me most is that missions like XPoSAT mean India is not just watching this research from the outside; Indian scientists are developing instruments and generating data that can contribute to our understanding of these extreme objects.

Black Holes and XPoSAT: What I Think About India’s Journey to the Darkest Corners of the Universe

When I first learned about black holes, the concept was both intriguing and confusing to me. I always thought of space as something huge, beautiful and mostly empty, but black holes taught me how far the universe can actually go. A black hole is a region of space where gravity is so intense that anything crossing the event horizon is permanently captured and cannot escape, not even light. I find the fact that we cannot directly observe a black hole quite fascinating. Although we cannot see it, we can study all the activity around it and make inferences based on those observations.

As I understand it, one of the ways in which a black hole can form is through the death of a massive star. The balance of a massive star is maintained between the outward pressure of the nuclear energy being produced at its core and the inward pull of gravity. When the fuel in the core is finally depleted, the star is unable to continue nuclear fusion and gravity will overcome the outward pressure, causing the core to collapse. This results in the formation of either a neutron star or a black hole, depending on the mass of the core. The outer layers of the star are flung off into space during the explosion known as a supernova. I find the life-cycle of massive stars quite fascinating, as the result of a huge explosion can turn into something that we can barely observe.

The event horizon is a fascinating concept to me, mainly because I think of it as a border around a black hole rather than a surface. Once the event horizon is crossed, any object can never return to the outside universe. Even more fascinating to me is the fact that the event horizon cannot be photographed like the surface of a planet, like astronomers normally do to study an object. We have to infer about a black hole based on the effects that it has on its surroundings. This made me realize that astronomers can sometimes study objects by observing the evidence that they leave behind.

Another fascinating fact about black holes is that they do not simply suck everything around them in. If our sun was somehow replaced by a black hole of the same mass, our entire solar system would not change. The planets would orbit the black hole the same way as they orbit our Sun, as the gravity exerted by the black hole would be the same. The only difference would be that there would be no sunlight. A black hole is only powerful enough to suck everything around it if things get close enough to it, or if a black hole interacts with another object such as stars or nebulae surrounding it.

When matter is close to a black hole, the situation can get much more intense. Gas and other matter can be sucked in by the black hole and form an accretion disk of superheated material. Due to this, the material can emit intense X-rays that astronomers can observe. I personally find the study of X-rays quite fascinating as astronomers are only able to observe the effects of a black hole on matter being sucked in by it and infer things about the black hole based on these observations.

I was quite amazed to know that black holes can bend light around them. According to Einstein, spacetime is bent by massive objects such as black holes. So the light travelling around a black hole would take a curved path, making it appear as if light is coming from a direction that it is not. I think this is an incredible demonstration of how far reality can be stretched in space. Light normally follows what we consider to be a straight path, but it can be bent due to black holes curving spacetime.

The first image of the black hole in the galaxy M87 was truly a breakthrough for me and made black holes seem much more tangible. The image taken by the Event Horizon Telescope in 2019 did not actually show the black hole itself, but the emission from the superheated material and the shadow of the black hole that was seen in the image. I think scientists doing this kind of research are incredible, as they are able to observe such a remote object from millions of light-years away using multiple telescopes.

I also find it really fascinating that our own galaxy, the Milky Way, has a supermassive black hole at its center called Sagittarius A. With a mass of 4 million suns, astronomers were able to observe stars orbiting really closely to the center of our galaxy as evidence for the existence of this supermassive black hole. The first image of Sagittarius A that was released in 2022 made the mysterious object in the center of our galaxy even more fascinating to me, as it too was observed using the emission from the superheated material, just like with M87. There is really something quite incredible and fascinating about being able to observe such mysterious objects using the signs that they leave behind.

One thing that really stood out to me when I first learned about black holes is that they come in many sizes. Some stellar-mass black holes are formed by the collapse of massive stars, whereas supermassive black holes can contain millions or even billions of solar masses and are located at the centers of galaxies. There are also intermediate black holes whose properties are studied intensively by astronomers. There are also primordial black holes that might be predicted to exist, but have not yet been discovered. The fact that some black holes formed from the collapse of massive stars seems completely intuitive, but the existence of supermassive black holes with such large masses is something that astronomers are trying to find out. How did black holes in the past grow so large? I find questions relating to black holes and their growth especially interesting because it connects black-hole research to the history of the universe itself.

Another thing that changed my perspective about black holes was learning about black-hole mergers. Two black holes orbiting each other eventually lose energy due to the emission of gravitational waves and merge. In 2015, scientists were able to observe gravitational waves from a binary black-hole merger for the first time. This discovery was significant to me because it showed that there was a whole new way in which we could study the universe. Observing gravitational waves from black-hole mergers opened up another avenue of study that showed how the universe works at a fundamental level.

The more I have learned about black holes, the more I have realized how crucial they are to understanding physics in the strongest possible way. Around a black hole, there are conditions that cannot be created on Earth: the gravity is intense, matter can travel at fantastic speeds, magnetic fields can be extremely powerful, and radiation can reach very high energies. Therefore, by studying black holes, scientists can study physics at the extreme. This is why I find black-hole research so fascinating. When I see the discoveries that can be made from the observation of black holes, it makes me think that there can really be no better laboratory for the fundamental laws of physics than a black hole.

I think this is where ISRO’s XPoSAT particularly drew my attention towards black-hole research. When I first heard about XPoSAT being launched on January 1, 2024, I automatically associated it with my favorite topic of black holes. However, upon further research, I realized that XPoSAT is actually a much broader concept. It is ISRO’s mission devoted to X-ray polarimetry and is designed to study astrophysical sources such as black holes, neutron stars and pulsars. XPoSAT consists of two payloads that together provide a comprehensive understanding of bright X-ray sources.

What fascinates me the most about XPoSAT is the study of X-ray polarization. In my experience, when we observe astronomical objects, we can usually observe how bright they are or what the spectrum of the object is. Polarization provides a third dimension of information about an object. When the polarization of the light is observed, astronomers can learn something about the geometry of the object or the process that resulted in the emission of light. In the case of black-hole observations, the polarization of the X-ray emission can tell astronomers something about the magnetic field strengths and the structure of material surrounding the black hole.

To me, XPoSAT is not only another satellite launched by ISRO. It is an incredible effort by India to participate in the scientific space research field. India has already achieved so many milestones in the field of space research, but I think missions like AstroSat, Aditya-L1 and XPoSAT are particularly important for younger researchers and students, as they have the opportunity to work with real scientific data. At the same time, black holes make me realize that there is so much that we do not understand about our universe. We know that black holes exist; we have observed their effects on matter, we have observed gravitational waves from binary black-hole mergers, and we even photographed some of these fascinating objects! But what is going on inside the event horizon? What is the heart of a black hole composed of? How did the first supermassive black holes form? How does gravity behave when quantum physics comes into play?

For me, the fact that we are studying black holes is incredible. Black holes are something that we cannot directly observe, but we can observe the evidence that they leave behind. X-rays, polarization, gravitational waves, the motion of stars, jets and bent light all become pieces of evidence that astronomers can piece together to learn more about these mysterious objects.

Russia Laboratory Incident: What Really Happened?

Recently, I was surprised to see in the news that a Russian laboratory incident occurred, which, in particular, interests me as a student of microbiology and biology in general. This laboratory incident is associated with the fact that a 28-year-old laboratory worker from the Irkutsk Anti-Plague Research Institute in Siberia developed severe pneumonia and died. There are versions that she could have been infected with Yersinia pestis, that is, the bacterium causing plague, as a result of a laboratory accident with a punctured tube with this microorganism 😲.

What concerns me most in this situation is that, when working with biological objects, biosafety issues associated with the study and use of various risk groups of microorganisms must be observed. This applies both to basic and applied research, for example, testing new drugs or clinical and diagnostic activities and studies on the natural history of infectious diseases. In my opinion, this incident demonstrates that biosafety and laboratory rules cannot be taken lightly since working with dangerous organisms carries significant risks. 

When I saw the news about this incident, my first thought was about the importance of laboratory rules when working with pathogens. It is necessary to observe the rules of personal protection, the technical equipment of laboratory work, measures for eliminating accidents, education and training of laboratory personnel and other safety mechanisms. A laboratory worker, for example, when growing pathogens for research purposes, must know not only how to work with them but also what to do in case of an accident.

In my opinion, this incident once again confirms that for research institutes that deal with biology and chemistry, laboratory safety is one of the priorities. Various safety measures and procedures, staff training and the introduction of new technologies reduce the probability of accidents associated with the release of pathogens into the environment.

Besides, it is also interesting to look at this incident from the point of view of the information provided and sensationalistic headlines. On social media, this incident received wide coverage with many headlines about the detected cases of plague infection and bacterial leakage. However, there are no reliable data on this, since, according to Russian authorities, there is no information about the accident with the participation of pathogenic microorganisms. This situation demonstrates to what extent society is manipulated with headlines that often do not reflect the real situation.

As a student in the field of science, this incident gives me food for thought about the importance of laboratory safety. On the one hand, there are many reports of scientists being ill with various pathogens, which is not surprising given the nature of their work. On the other hand, the authorities are taking this incident very seriously: nearly 200 people were put under medical observation as a result of possible contact. In other words, there is no doubt that such a situation requires measures to prevent pathogens from spreading.

I believe that this incident teaches us that biosafety and biosecurity issues are no less important than scientific curiosity and breakthrough discoveries. While scientists are studying and seeking ways to fight pathogens, including drugs and vaccination, they must remember the potential risks and consequences of working with such microorganisms. One way to reduce the danger and panic caused by laboratory accidents is transparent and honest reporting of such incidents by laboratories, authorities, and health organizations. People’s lives and social security depend on how honestly the situation is disclosed and what steps are being taken to eliminate the consequences.

Summing up, I would like to say that this incident made me re-express some thoughts about laboratory safety. Working in a laboratory requires order, adherence to safety standards and the use of equipment. One mistake can be detrimental not only to the scientist but also to all who will have to deal with the consequences of this mistake. In this regard, I would like to note that this incident made me once again realize the importance of laboratory safety and biosafety issues for a scientist in general and for me personally.

Most importantly, in this situation, I would not like to refer to this incident as a laboratory accident with bacterial leakage since, at the moment, there are no confirmed data on this. There are various assumptions and guesses, but no truth yet, while the WHO has concluded that the current risk to public health is low and that surveillance of contacts is necessary.

When Artificial Intelligence Meets Microbes: An Essay

For today’s speech, I would like to talk about something truly fascinating—the connection between such disparate topics as Artificial Intelligence and Microbiology. Tell me, have you ever wondered how the tiniest organisms on Earth can both make you sick and cure you? Have you ever wondered how we could learn to harness their power to help humanity? Well, then, look no further, because that, dear friends, is the precise topic of today’s lecture.

Microorganisms, like bacteria, fungi or microscopic algae, inhabit every surface on Earth. They are responsible for making food, medicine, making our planet habitable and even inside our bodies: most human organs would not be able to function without a microbiome. But since these creatures are so small, we need special techniques to examine them closer. A microbiologist, when trying to learn about a certain microbe, will peer into a microscope, observe its movements, study its structure, culture a sample so that it multiplies and can be tested and perform a myriad of other tasks.

But what if there is a better way? What if we could utilize one of our greatest achievements in technological progress, Artificial Intelligence, to peer into the world of microbes?

Artificial Intelligence can achieve many things. But the most interesting applications of it, in my opinion, are connected to the study of microbiology. Scientists hope that one day, AI will allow them to peer into a petri dish with cultured microorganisms and tell them what they need to know about these organisms. For example, one application is studying antibiotic resistance. When bacteria stop being affected by antibiotics and become immune to them, it becomes considerably harder to get rid of. By analyzing genetic information and test results, scientists will be able, with the help of an AI, to determine what genetic sequences give a microbe antibiotic resistance, which bacteria are more likely to develop it and what other information can help in the fight against antimicrobial resistance.

Another exciting prospect is the application of AI to determine what drugs can be produced with the help of bacteria. Many bacteria and other microbes are capable of producing a plethora of different substances. Scientists can examine these substances for their potential medical application and subject them to trials. But since there are many candidates for the job, this process can be automated by an AI, which can score them based on desirable characteristics and narrow down the list for scientists to examine.

But there is much more to the application of AI to microbiology than medical research. Imagine looking into the heart of an ocean and seeing billions of bacteria that live alongside corals, sponges, molluscs and other aquatic organisms. Some of these bacteria can be examined for antimicrobial properties, but many have yet to be understood. Scientists hope that one day, AI will allow them to sort through the diversity of the microbial world, studying their genomes and looking for potential candidates for drug production, biomedical engineering and other purposes.

The same goes for environmental protection, where scientists are eager to utilize AI to sort through the genetic material of bacteria and other microbes that can break down man-made pollutants, help clean water, filter air and accomplish other tasks. And finally, there is the study of the human microbiome, which has the potential to improve human health in ways beyond imagination. But no matter how far scientists can push the boundaries of medical progress with the help of AI, there is one limitation, one rule of thumb that cannot be broken: no matter how convincing a computer-assisted genetic analysis may be, it cannot prove anything on its own. Only laboratory experimentation and rigorous scientific research can confirm or disprove a hypothesis. And that is why AI, fantastic and powerful as it may be, will never replace human researchers, no matter how powerful its algorithms and neural networks may be.

 

But what can it bring us, then? In my opinion, the most exciting prospect of AI is the opportunity to combine human insight with computer power to analyze huge amounts of data, searching for patterns that would take ages to spot manually. The power of an AI is not in its ability to surpass humans, but rather in its ability to complement them. That is why I am so incredibly excited about the prospects of AI and its relationship with microbiology, genetics, medicine and many other sciences. It has the potential to improve human life and lead us to new medical breakthroughs never thought possible.

 

And now, let me close by saying just how exciting I find the prospect of studying the tiniest organisms on Earth. No matter how small they are, they have so much potential, and Artificial Intelligence will assist us in seeing what other incredible things microbes can do.

The Living Light: How Bioluminescence Works, Why Organisms Glow, and What It Means for Our Seas

Bioluminescence

Bioluminescence means a living creature produces light. The light is not from a manufactured source such as a bulb with a battery. The light emitted is called a cold light because very little energy goes into heat; most of it goes into light. A fluorescent substance requires light to be shone upon it before it starts to glow. A bioluminescent organism is able to produce light even in complete darkness.

Where is it found?

Bioluminescence is commonly found in oceans. Because sunlight does not penetrate very far into water, organisms that live below this "sunlight zone" often produce light. In some regions, as much as three-quarters of species in the water column (the vertical section of water) could create light (data from studies). For these organisms, light is a means of camouflage, predation and communication.

1. Dinoflagellates: The glowing waves of our beaches

These are single-celled plankton too small to be seen individually. When they congregate in huge numbers, forming blooms, the sea changes. For us, Noctiluca scintillans, also called the "sea sparkle", is the most familiar of the dinoflagellates. When a wave breaks or a boat passes or a person walks through the surf, these plankton are disturbed and flash blue light for a very short time, causing the wave crest to appear to have streaks of electric blue. This was observed on our own coast at Thiruvanmiyur and Neelankarai.

2. Jellyfish and comb jellies

Jellyfish and comb jellies often have blue and green lights on them. Of the jellyfish, Aequorea victoria is of great scientific interest. A protein called green fluorescent protein (GFP) was extracted from this species. By attaching GFP to a protein of interest, the modified protein can be tracked within a cell (by its green fluorescence). This technique earned the 2008 Nobel Prize in Chemistry. Thus, a bioluminescent jellyfish has transformed research laboratories.

3. Fish

Many fish use bioluminescence for camouflage and predation. The anglerfish has a glowing lure (organism) held at the front of its head. Small fish are attracted to the lure and are eaten by the anglerfish. In several species of fish, a symbiotic relationship exists where bacteria living in the lure produce the light. Lanternfish (a type of fish) have rows of light-producing organs (photophores) along the body and are some of the most abundant fish in the oceans. Hatchetfish have photophores on the belly that serve for camouflage (see below), and other photophores on the tail that are used to lure prey.

4. Squid

The firefly squid has light organs along the body and arms that can be flashed as signals. The Hawaiian bobtail squid harbors the bioluminescent Vibrio fischeri bacteria in a special organ. The squid feeds the bacteria, and in turn the bacteria provide light, which is a textbook case of a symbiotic relationship.

5. Fungi

Some mushrooms have bioluminescent patches on them that glow green in the dark. The glow on rotting wood is called foxfire. The glow is thought to attract insects that help the mushroom by spreading its spores.

6. Others

There are also fireflies, glow-worms, millipedes, earthworms, and various luminous bacteria such as Vibrio fischeri.

Why do organisms glow?

Light has different uses for the organism, some of which are explained here.

• Defense by startle or distraction. Some squid and shrimp produce a cloud of glowing material by muscular contraction. This distracts a predator and serves the same purpose as the ink squirting of some squid species.
• Counter-illumination. Many organisms live in the mesopelagic or twilight zone of the oceans. To avoid being seen by predators looking up from below, many produce light on their ventral (lower) surfaces, thus cancelling their shadow. By emitting the same amount of light that is coming from above, they become masters of disguise.
• The "burglar alarm" effect. When under attack, some plankton (marine organisms) produce a flash of light that may attract a predator of the attacker, thus serving as an alarm call (but to another organism).
• Luring prey. The anglerfish is a well-known predator that uses a bioluminescent lure to entice prey towards its mouth.
• Finding mates. As mentioned with fireflies, the flashing is used for communication between potential mates. Some marine worms also use light flashes for this purpose.
• Communication and symbiosis. Certain organisms maintain light-producing bacteria in special organs and provide nourishment to them.

How light is produced 

The basic reaction is the same everywhere—luciferin + oxygen → oxyluciferin + light. There are variations on this theme, though, since the reaction varies from organism to organism. The luciferin within a firefly is not the same as that in a dinoflagellate or a jellyfish. This is why scientists believe that bioluminescence has evolved independently many times. Different life forms have independently discovered this incredibly useful ability. Some organisms make use of a photoprotein that holds the luciferin until certain conditions are met (e.g., presence of calcium). When disturbed, dinoflagellates send out certain messengers to trigger the reaction, and the flash of light occurs within a fraction of a second.

Why it matters to humans

• Biomedical research. Luciferase and the green fluorescent protein (GFP) are now standard research tools. They are used to determine gene expression and to follow a procedure in a living system. Luciferase can be used to track cancerous cells or the spread of infection.
• Environmental monitoring. Bioluminescent organisms can be used to detect toxins in the environment. In certain bacteria, the presence of a toxin causes the toxin to reduce the light level.
• Biotechnology. Researchers are trying to create bioluminescent plants and alternative forms of lighting. At present, the light output is very low, so this technology is still at an early stage.
• Ecology. Scientists are trying to determine how much light is present in the ocean because it is a source of illumination (in lieu of sunlight) there.

Fun facts

Glowing things in the ocean are like words in a secret language. Since sunlight does not penetrate the deep oceans, light there takes the place of visual communication. The light is used to send messages, to startle or attract enemies or prey, and to camouflage oneself from predators. Most marine organisms emit light in the blue-green spectrum, since this light travels furthest in water. Some deep-sea fish emit red light, which is invisible to other creatures and so can be used as a sort of stealth flashlight. Blooms of Noctiluca scintillans can be identified because the plankton light up when the water is agitated. If one takes a kayak ride at night while there is such a bloom, one would be able to see beautiful blue lights in one's wake.

Conclusion

Bioluminescence is one of the most beautiful ideas of nature, involving living organisms producing light for camouflage, predation, communication, and so on. From the tiny dinoflagellates that dot our own beaches to the amazing anglerfish that live deep in the oceans, bioluminescence has helped each of these organisms to thrive. Bioluminescence has provided mankind with research tools that have helped us understand nature. Bioluminescence also reminds us that the sea is a living entity and needs to be protected. So while we enjoy the view of the glowing beach, we must also remember to care for the sea and not add any more to its burden. We should also refrain from polluting the water with plastics and other materials and report any such activity to relevant authorities.

Glowing Waves of Chennai: The Science and Warning Behind Bioluminescence

Bioluminescence

Bioluminescence is light generated by a biochemical reaction in a living organism. The process generally involves a light-emitting molecule called luciferin, which combines with oxygen to generate a molecule called oxyluciferin (often with the help of an enzyme called luciferase) and releases light (commonly referred to as "cold light" because of minimal infrared heat emission). This phenomenon has evolved independently multiple times in various organisms. The glowing waves of Chennai happen to be an easy-to-see kind of bioluminescence.

The Chennai connection: "sea sparkle" on our own coast

Chennai has had numerous memorable bioluminescence events, reports the article. On more than one occasion, people on East Coast Road beaches have been amazed to see blue, sparkling waves rolling towards the shore: blue waves in Thiruvanmiyur, Palavakkam and Injambakkam. One reported seeing the sparkles from Kovalam to Thiruvanmiyur. The culprit is a kind of tiny plankton called Noctiluca scintillans, or the 'sea sparkle' that glows when agitated. Be it high tide, low tide, storm or a change in salinity and temperature in the water, they all excite them to produce a dazzling effect. When the wave hits the shallow waters, the plankton light up, resulting in blue electric streaks in the white crests of the waves.

Why is it happening in Chennai? From Researchers 

Rain and Runoff. One reason given was after a particularly rainy period in Chennai. A local weathercaster even mentioned that according to a study, blooms were connected to rainfall, lower temperatures and nutrient runoff. Another coastal researcher mentioned that they tend to bloom in areas with oxygen deficits and enriched nitrates and phosphorus. According to a travel guide, the ghostly glow is usually seen after dark, usually until late October. The northeast monsoon's arrival time coincides with when Chennai's looking for them. NCCR researchers at Pallikaranai have been studying the sudden explosion of Noctiluca scintillans on the Chennai coast (on 17, 18, and 19 August 2019).

Starting with the time of the northeast monsoon, residents of Thiruvanmiyur and Neelankarai saw stretches of the beach glow in October 2024. Researchers suggested that the heavy rainfall brought nutrients into coastal waters and lowered sea surface temperature, which created favorable conditions for Noctiluca to multiply. 

A beautiful sight, but not a good sign?

Marine experts have said the beautiful scene is not a good sign for marine life and is an indicator of climate change, which could affect the long-term health of the ecosystem. The same researcher added that blooms like this have been blamed for fisheries collapse in some cases. Noctiluca is not known to be toxic like some other harmful algal bloom species are. Still, dense blooms can cause a drop in oxygen in the water, which is important for fishing communities along the coast of Tamil Nadu.

Places in India

Chennai is not the only place to witness bioluminescence in India. 

• Kerala backwaters around Kochi can glow with plankton at night
• Karnataka's coast, for example, around Udupi and Mattu, has also reported glowing waters
• The Andaman Islands are popularly known for this glowing plankton, including night kayaking spots

Conclusion 

The glow is certainly spectacular, but a bloom can be a bad sign. One coastal researcher pointed out that these plankton blooms tend to occur in areas with oxygen deficiency and often high concentrations of nitrogen and phosphorus. Further evidence of the potential threat of this bloom comes from nearby waters of the Gulf of Mannar. There, researchers observed an association of blooms with mass coral deaths and fish kills. In 2019, researchers reported severe coral mortality and fish kills in the Gulf of Mannar. The phenomenon recurred in 2021 and 2022. However, the blooms near Chennai are not the same as those offshore; nevertheless, these blooms could also have a negative impact on the coastal ecosystem of the Bay of Bengal.